Nut-lock.



A. N. DAVIS.

NUT LOCK.

APPLIO A T I O N P I L E D O 0123,1912. 1,085,247 Patented Jan. 27, 1914.

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ALBERT XDAVIS, OF ST. LGUIS, MISSOURI, ASSIGNOR OF ONE-HALF T0 SPARKS D. HENDERSGN, OF ST. LOUIS, MISSOURI.

NUT-LOCK.

Specification of Letters Patent.

Patented Jan. 2'7, 191%.

Application filed October 23, 1812. Serial No. 727,287.

To all whom it may concern Be it known that I, ALBERT N. DAVIS, a citizen of the United States, residing at the city of St. Louis, State of Missouri, have invented a certain new and useful Improve ment in NutLocks, of which the following is a specification, reference being bad to the accompanying drawings, forming a part hereof, in which Figure 1 is an elevational view, partly in section. of a bolt and nut embodying my in vention: Fig. 2 is a view thereof partly in longitudinal section on the line 22, Fig. 1; Fig.3 is an end view thereof; Fig. 4 is a lateral oi cross sectional view on the line l -i. Fig. 2; Fig. 5 is a plan view of the inner face of the nut comprised in, and forming part of, my invention Fig. (l is a perspective view of the split spring ring comprised in, and forming part of. my invention; and Fig. 7 is a. perspective view of the \vasl'ier-member comprised in. and forming part of, my invention. and which is adapted to reinforce said ring and in which said ring is normally seated.

This invention relates to a certain new and useful improvement in nut-locks, the objects of my invention being to provide the bolt and its nut with comparatively simple and inexpensive cooperating locking means whereby, when the nut is screwed or threaded down upon the work, it becomes automatically locked or fixed in work-holding or engaging position and from which position it is practically impossible for said nut to afterward, through jars, shocks, vibrations, or the like, work loose, said nut being only removable from work-engaging position, the bolt and its nut remaining intactand uninjured, by means of a suitable or special tool manipulated to that end. and to improve generally upon devices of the kind stated.

lVith these objects in view, my invention resides in certain novel features of construction, arrangement, and combination of parts, all as hereinafter described and afterward pointed out in the claim.

Referring by numerals to the accompany ing drawings, 1 indicates a suitable bolt provided at one end with a suitable head 2 and threaded atits other end, as at 3, bolt 1 being also provided on its threaded surface or at. its threaded end 3, for purposes hereinafter appearing, with a longitudinal groove or elongated recess, as at 4, sec particularly Fig. 1.

5 indicates a suitable interiorly threaded nut adapted to fit and thread on the threaded end 3 of bolt 1, this nut 5 being provided on its inner face and around the rim of the threaded opening therein with an under-cut cirtular series of ratchet teeth or the like, as at 7 indicates a washer-member circularly perforated to tit on and neatly accommodate the body or shank of bolt 1. This washermember 7 is interiorly cut away, as at 8, to provide an inclosed annular shoulder or seat 9 for a split spring ring or other suitable resilient member 10 adapted to neatly fit on bolt 1 and rest within the cut-away portion 8 of member 7 with its outer face preferably bearing against or resting on, the surface of said seat 9, as shown par ticularly in Figs. 1 and In operation, washer-member 7 fits and is interposed on bolt 1 between the work \V to be engaged and nut 5 with its said cut-away portion 8 presented toward, and the rim thereof impinging directly upon. the inner face of nut 5, said seat portion 9 of washer-member 7 being provided with an inwardly-projecting key or member 11 adapted to slidably fit in said longitudinal groove 4 of bolt 1 and operativcly engage with the walls of said groove to prevent washer T bodily rotarily moving on. and relatively to, nut 1. As shown particularly in Fig. 6, said split ring 10 at one of its ends is bent slightly sidewise to provide a projecting tooth or dog-member -as at 12, adapted, when said ring is in position within washer T, to project beyond the plane of the outer face of washer T and operatively engage with said teeth 6 on nut 5. Ring 10 is also, as shown particularly in Fig. 6, provided preferably adjacent its said bent end 12 with an inwardly-projecting key or portion 13 adapted to likewise slidably fit in said groove 4 and operatively engage with the walls thereof to prevent said ring 10 bodily rotarily moving on, and relatively to, bolt 1. Preferably, as stated, ring 10 is of such width relatively to the depth of cutaway portion 8 of washer 7 that said dogmember or tooth 12, when ring 10 is within washer 7, will project outwardly slightly beyond the outer face of washer 7.

' In operation, a bolt 1 having been placed in position or passed through the work W threaded inwardly upon nut l to force.

' washer 7 tightly up against work W, they will positively, firmly, and securely lock nut 5. upon bolt 1 and lock nut 5 so securely or fixedly upon bolt 1" that it"i practically impossible for said nut to afterward, through jars, shocks, vibrations, or the like, work loose on bolt 1 from work-engaging position no matter in what particular position said bolt 1 may be placed or hang. lVasher 7, while providing a seat for said ring 10, will at the same time, by receiving the strainimparted to ring 10, also tend to reinforce,

and prevent the breaking of, or injury to, said-ring. To remove ring 10 from bolt 1 without damaging or breaking the parts stated, a suitable or special tool may be inserted endwise in groove 4 and tooth 12 thereby disengaged from teeth 6, when ring 5 may be outwardly threaded or moved on bolt 1 from work engaging position.

I am aware that minor changes in the construction, arrangement, and combination of the several parts of my invention may be made and substituted for those herein shown and described without departing from the nature and principle of my invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

The nut-lock herein described, the same comprising, in combination with a threaded bolt rovided on its threaded surface with a longitudinal groove, a threaded nut fitting on said bolt and having an undercut or depressed circular series of teeth on its inner 4 or under face around the rim of the threaded opening therethrough, a washer 7 fitting on said bolt between the under faceof said nut and the work to be engaged and having an integral inwardly-extending projection 11 5 fitting in and engaging with the walls of said groove to hold said washer from rotatorily moving on said bolt, said washer being interiorly cut awa atone'side around the opening tl'ierethrmigh and thereby pro- 5 vided with an inclosed annular seat 9, the rim of said seat impinging flatwiso directly upon, and being entirely covered by, the under face of said mu when said parts are in operative position, and aflat split spring 6 ringmember 10 fitting on said bolt and seated in and inclosed by said washer with its outer face substantially flush with the rim of said seat, said ring-member having a width or thickness approxin'mtely the same 6 as the depth of the out-away portion of said washer and being laterally bent at one end i and thereby provided with an integral spring tooth 12 prl'ijecting normally beyond the plane of the rim of said sealand being 7 adapted to operatively engage with said u'ndercut or depressed series of teeth to lock said ,nut on said bolt in work-engaging position, said ring-member being further provided closely adjacent said tooth 12 with an 7 inwardly-extending projection 13 also fitting in and engaging with the walls of said 1; groove to hold said ring from rotatorily moving in said seat and on said bolt, substantially as and for the purpose described. 8

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

ALBERT N. DAVIS,

Witnesses RUTH PETERSON, S. D. IIENDERSON.

Goples oi this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

